At 09:06 14/09/98 -0700, you wrote: >You would use the compliance route called "Self Declaration". This means you >consult with testing agencies on finding the best catagory for your >product(s) or you just select the "generic" EN50081 catagory. Then you apply >or have the test agency apply the necessary tests to fulfill the >specification. This is still quite pricey- I've looked into it, but none of the normally touted options are really suited to the hobbyist who is relatively confident that the device is designed well and will not malfunction due to external EMF, or cause others to do so. What I would like is a simple item I could build, or buy cheaply, with which I could test items which I feel are likely to "pass by a mile"- so if I test them myself, in non-laboratory conditions, with simple tests, and they pass those effortlessly, then I can confidently assume they will pass the "easier to pass but more costly to implement" tests required for actual compliance. I realise that some manfuacturers are pumping equipment which just "nips through" the tests, but many products, such as low frequency, small, well designed PIC circuits will, as someone has mentioned, probably not even register on the tests- surely there's some simple tests which could be done "at home" to verify this- and if emissions are within an order of magnitude of the limits, one could go for the real tests to be sure? >There are other routes to pursue, but I would consider self declaration the >most efficient and least costly for small operations. Where small is a business producing one or two hundred, maybe- where small is a hobbyist producing less than ten- definitely not! List the prices, divide them by 10, and see what effect that has on a product with a parts cost of about 10 to 20 dollars? A large one! Nigel -- Nigel Orr Research Associate O ______ Underwater Acoustics Group, o / o \_/( Dept of Electrical and Electronic Engineering (_ < _ ( University of Newcastle Upon Tyne \______/ \(